| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] happen [prep] be | 107 |
|
| 2 | [pron] happen [prep] be a | 61 |
|
| 3 | [pron] [adv] [prep] be a | 35 |
|
| 4 | [adv] happen [prep] be a | 25 |
|
| 5 | [pron] [adv] happen [prep] a | 6 |
|
